RU191517U1 - A device for the preparation of a disinfectant for the disinfection of laboratory rooms designed to work with viral and bacterial infections - Google Patents

Abstract

The utility model relates to emergency or planned disinfection or fire extinguishing devices in laboratory facilities working with dangerous viral and bacterial infections, and can be used in biotechnology, microbiology and the medical industry. The technical result of the utility model is the creation of a device that provides improved quality of disinfection or fire extinguishing of laboratory rooms, as well as improving the safety of equipment and devices of these laboratories. The device includes a source of supply of gaseous heated heat carrier under pressure and a container with a disinfectant, connected by a pipeline to a source of supply of gaseous heated heat carrier under pressure, made in the form of a pipe-in-tube type tube heat exchanger twisted into a spiral, the outer pipe of which is connected to a source of superheated water vapor, and the inner pipe is connected to a source of compressed air and through an electromagnetic valve to a container with a disinfectant. The device is equipped with a looped pipe for disinfection or fire fighting, attached to the walls or ceiling around the perimeter of laboratory rooms designed to work with viral and bacterial infections and having uniformly located nozzles with valves for supplying gas to the laboratory premises under the pressure of a gaseous disinfectant solution or fire fighting gas , compressed gas cylinders for fire fighting, connected by a fire line through an electromagnetic valve with oltsovannym conduit, and a supply of heated gaseous heating medium under pressure, wherein a container of disinfectant connected with an inlet conduit for disinfecting looped or extinguishing disposed in the tank above the level of filling it with disinfectant. 1 s.p. f-ly, 3 ill.

Description

The utility model relates to emergency or planned disinfection of laboratory facilities working with dangerous viral and bacterial infections and can be used in biotechnology, microbiology and the medical industry.

The inventive device for disinfection of laboratory premises with an annular pipe for spraying the disinfectant is intended for the final disinfection of the premises of the "infectious" zone during scheduled laboratory shutdowns for the period of the routine inspection of engineering systems for ensuring biological safety and scheduled preventive repairs, as well as during the elimination of emergency situations when working with PBA I-IV hazard groups in the laboratory. In addition, it can be used as part of a centralized automatic fire extinguishing system in case of fire in the premises of the "infectious" zone.

A device is known for sterilizing or disinfecting the surface of a container containing a steam generator of a sterilizing agent (the sterilizing agent is maintained in a vapor state), a nozzle in communication with the generator, a mechanism for moving and installing the nozzle relative to the surface of the container perpendicular to the direction of steam flow of the sterilizing agent from the nozzle, and a control unit for controlling the release of the generated steam of the sterilizing agent through the nozzle into the container and cleaning the container of the released sterilizing agent

agent gas from the specified nozzle (RF patent No. 2275208, IPC A61L 2/00, publ. 04/27/2006). The device provides high-speed disinfection of surfaces coming from the steam generator nozzle with dry steam with 35% hydrogen peroxide as a disinfecting material at a relatively high temperature, and the remaining hydrogen peroxide vapor is then removed from the tank by blowing it with hot air with high temperature.

However, such a device is not intended for disinfecting surfaces of large areas and / or extinguishing laboratory rooms designed to work with viral and bacterial infections. Hydrogen peroxide has a low bactericidal activity, so it is not used to disinfect dangerous viral and bacterial infections.

A known machine for the complex disinfection of agricultural production facilities of poultry complexes, containing installed on a self-propelled chassis with an engine, water tanks, a foaming agent and a disinfectant solution with a heating system, connected to a pump, a compressor, a mixer, a piping system and a flexible outlet hose with nozzles, and the mixer the inlet is connected to the pump and through the pressure reducer and the receiver to a compressor, and at the outlet to a flexible hose (RF patent No. 2099088, A61L 2/00, publ. 12/20/1997).

The large dimensions and weight of the machine limit its use in the disinfection of surfaces of numerous rooms in laboratory rooms designed to work with viral and bacterial infections. The device does not allow for fire extinguishing in these rooms.

A device for disinfection of steam containing a steam generator and a nozzle connected to a steam generator (international application WO 9948538, A61L 2/07, publ. 09/30/1999).

The device provides one type of disinfecting effect - water vapor, which does not allow to suppress the pathogenic flora present in laboratory rooms designed to work with dangerous viral and bacterial infections. The device does not allow for fire extinguishing in these rooms.

A known disinfection machine containing a steam generator, sources of hydrogen peroxide, a source of disinfectant in the form of peracetic acid, a means for mixing water vapor and peracetic acid and ejector mixture (international application WO 2011076947, A61L 2/22, publ. 06/30/2011) .

However, such a device is not intended for disinfecting surfaces of large areas and / or extinguishing laboratory rooms designed to work with viral and bacterial infections.

A device is known for disinfecting and sanitizing objects using water vapor, comprising a container for accommodating a disinfectant liquid added to steam during its supply, a tubular body forming a chamber for discharging steam from a source of compressed steam, having a handle for transferring and a nozzle integrated inside the chamber at its closed end, and the chamber is open at the other end to supply steam to the disinfection object and has a cross-sectional area greater than the cross-section of the nozzle opening 30-150 times, and a container for disinfectant liquid displacements is fastened on the outside of the tubular body to supply said liquid into the chamber cavity for mixing it with steam before disinfection facility (RF patent №2409390, A61L 2/07, publ. 20.01.2011 g). The device allows you to disinfect small objects with a small work surface, including surgical and / or medical instruments and equipment.

However, such a device is not intended for disinfecting surfaces of large areas and / or extinguishing laboratory rooms designed to work with viral and bacterial infections.

The closest analogue (prototype) is an installation for treating work surfaces with a disinfectant solution using water vapor, comprising a steam generator with a steam line and nozzle integrated in a tubular body having an open end for disinfecting solution discharge with water vapor, and a container for the disinfecting solution. The container for the disinfectant solution is formed inside the tubular body and is made in the form of a chamber with an external inlet pipe for connection to an autonomous source of disinfectant solution. The specified chamber is made with the possibility of heat exchange with the nozzle and the introduction of a disinfectant solution into the nozzle channel (RF patent No. 2554770, IPC A61L 2/07, publ. 06/27/2015). The technology for treating work surfaces with a disinfectant solution using water vapor involves the formation of a mixture of a disinfectant solution and water vapor during processing of the work surface. Humate was used as a disinfecting solution, and this mixture is a humate aerosol in water vapor. The humate aerosol in water vapor has a temperature of at least 60 ° C and a dispersion of 5-10 microns. The concentration of humates in water vapor is from 80 to 150 ml / l. The release of humate aerosol in water vapor to the working surface for processing is carried out at a distance of not more than 0.5 meters from the specified surface. Processing of the working surface is carried out once for 15-20 seconds with a humate aerosol in water vapor.

However, the prototype device is not intended for the disinfection of large surfaces in laboratory rooms designed to work with viral and bacterial infections. In addition, the disinfectant aerosol in water vapor adversely affects the equipment and instruments of laboratories during the disinfection of these rooms.

The technical result of the utility model is the creation of a high-performance device that improves the quality of disinfection of laboratory rooms designed to work with viral and bacterial infections, as well as increases the safety of equipment and devices of these laboratories by forming a large volume of air-vapor disinfectant mixture.

The specified technical result is achieved by the fact that in the device for disinfection or fire extinguishing of laboratory premises designed to work with viral and bacterial infections, including a source of supply of gaseous heated coolant under pressure and a container with a disinfectant connected by a pipe to a source of supply of gaseous heated coolant under pressure, according to utility model, the source of supply of the gaseous heated coolant under pressure is made in the form of a swirl in a spiral l tubular heat exchanger type "pipe in pipe", the outer pipe of which is made with the possibility of connection through an electrovalve with a source of superheated water vapor, and one end of the inner coarse heat exchanger is made with the possibility of connection with a source of compressed air, the other end is connected by a pipe through a solenoid valve compressed air with a container with a disinfectant, and the tank above the level of filling it with a disinfectant is made with the possibility of connection with the inlet looped pipeline with nozzles having valves for supplying disinfectant to the laboratory rooms in which the specified looped pipeline is located.

In addition, the inventive device is equipped with a control and monitoring unit connected to an electrovalve for supplying heated compressed air to a container with a disinfectant, and an electrovalve for supplying superheated water vapor to the outer tube of the heat exchanger.

A centralized steam supply system or an autonomous steam generator is used as a source of superheated water vapor, and a centralized compressed air supply system or an autonomous compressor is used as a source of compressed air.

The utility model is illustrated by the following drawings. In FIG. 1 presents a node for the preparation of a gaseous disinfectant of the claimed device. In FIG. Figure 2 shows a diagram of a device for disinfecting or extinguishing laboratory rooms designed to work with viral and bacterial infections with an annular pipe and nozzles for spraying a gaseous disinfectant or gaseous extinguishing agent. Pa fig. 3 presents a fire extinguishing system of the claimed device.

A device for preparing a disinfectant for disinfecting laboratory rooms designed to work with viral and bacterial infections includes a unit 1 for preparing a gaseous disinfectant of the inventive device, comprising a source 2 for supplying a gaseous heated heat carrier under pressure and a container 3 with a disinfectant connected to a source 2 for supplying a gaseous heated floor coolant pressure. The source of supply of gaseous heated heat carrier under pressure is made in the form of a tube-in-tube type tube-shaped heat exchanger coiled in a spiral, the outer pipe 4 of which is connected to a source of superheated water vapor, and the inner pipe 5 is connected to a source of compressed air and through a pipe 6 through an electromagnetic valve 7 - to the tank 3 with a disinfectant.

The inventive device is configured to connect with a looped pipe 8 for disinfection or fire fighting, attached to the walls or ceiling around the perimeter of laboratory rooms 9, designed to work with viral and bacterial infections and having uniformly located nozzles 10 with mechanical valves for supplying to these laboratory rooms 9 under pressure of a gaseous disinfectant solution and / or compressed gas for fire fighting. The device has cylinders 11 with compressed gas for fire fighting, connected by a fire pipe 12 through an electromagnetic valve 13 with a looped pipe 8.

Capacity 3 with a disinfectant made with the possibility of connection with the inlet 14 of the looped pipe 8 for

disinfection or fire fighting, located in the tank 3 above the filling level with a disinfectant, and the outlet 15 of the specified pipe 8 is connected to it (looped) above the tank 3.

In the laboratory premises 9, fire alarm sensors 16, a control and monitoring unit 17 connected to fire alarm sensors 16, an electrovalve 7 for supplying heated compressed air to a container 3 with a disinfectant, an electrovalve 13 for the fire pipe 12 and an electrovalve 18 for the pipe 4 for supplying water vapor are installed.

In addition, the source 2 for supplying a gaseous heated heat carrier under pressure (spiral heat exchanger), a container 3 with a disinfecting solution, a looped pipe 8 for disinfection or fire fighting are additionally equipped with the necessary control and measuring devices (pressure, temperature, gas concentration sensors, etc.) connected to the control and monitoring unit 17 (not shown in the drawings).

Steam is supplied to the spiral heat exchanger (heat carrier supply source 2) through a centralized case steam pipeline equipped with an automatic electrovalve 18 from an autonomous steam generator installed in the technological room of the “clean” zone or from the facility boiler room. The removal and discharge of steam condensate from a spiral heat exchanger is carried out through the condensate line of the “clean” zone outside the housing through a steam candle. The solenoid valve 18 controls the supply of steam to the specified heat exchanger and is connected to the control unit 1 7.

The compressed air is supplied to the spiral heat exchanger (source 2 of the coolant supply) from an autonomous compressor installed in the technological room of the “clean” zone or central compressor facility. Air is supplied to the heat exchanger from the technological area of the “clean” zone through a pipeline equipped with an electrovalve 7, which excludes reverse air flow.

A device for the preparation of a disinfectant for disinfection of laboratory premises as part of their disinfection or fire extinguishing system works as follows. A steam-disinfecting mixture is obtained by supplying compressed air to a container 3 heated to the required temperature (in the range from 50 to 150 ° C) under a mirror of a disinfecting solution (Fig. 1). Heated compressed air passes through a disinfectant solution, heats it, as a result,

its evaporation and in the form of the resulting steam-disinfecting mixture, the disinfectant enters the looped pipe 8, installed in laboratory rooms, in which disinfection of microbiological objects is required. During the circulation in the circuit "container 3 - looped pipe 8", the disinfecting mixture reaches the required pressure and temperature parameters, after which the nozzle valves 10 are activated and the mixture enters the disinfected rooms until the entire volume of the disinfecting solution is completely discharged from the tank 3. After that, it takes 24 hours exposure for the final disinfection of premises.

Final decontamination includes the sequential use of a peroxide solution of hydrogen peroxide for disinfecting the aerosol, then a steam-formalin disinfecting mixture and, after 24 hours of exposure, neutralizing formalin in the air and on the surfaces of laboratory rooms, corridors and auxiliary technological rooms of the “infectious” zone, provided that these rooms are sealed steam-ammonia mixture with subsequent ventilation of the premises.

The total amount of disinfectant / disinfectant needed to disinfect a particular room is calculated based on its volume. Achieving the required costs of the disinfectant / disinfectant is ensured by supplying a steam-disinfecting mixture through the number of nozzles 10 calculated for the given room and the time of its supply to the room, which ensure that 1.0 m ^{3 of} this room receives the required concentration of disinfectant / disinfectant.

The amount and consumption of steam-formalin disinfectant mixture is calculated based on the following data:

When disinfecting the premises, provided they are sealed, a 40% aqueous solution of formaldehyde (formalin) 17.5-12.5 ml / cu. m (7-5 g / m3 formaldehyde) at a room temperature of 20-25 ° C; formalin 37.5-25.0 ml / cubic m (15-10 g / m3 formaldehyde) at a temperature of 15-17 ° C and relative humidity 60-92% at an exposure time of 24 hours

When disinfecting the hidden cavities and the reverse sides of the microbiological safety box filters (BMB), provided that the BMB is sealed, a 37% formaldehyde solution (60 ml of formalin and 60 ml of water is vaporized for every cubic meter of box volume at a temperature above 20 ° C and a relative humidity of 65%) at exposure time 8 hours

The amount and flow rate of the steam-ammonia mixture is calculated based on the following data. When disinfecting the premises, provided that they are sealed, 25% ammonia solution at a flow rate of 100 ml / cu. m at an exposure time of 12 hours

When disinfecting hidden cavities and the reverse sides of the filters of microbiological safety cabinets (BMB), provided that BMB is sealed, 25% ammonia solution at a rate of 60 ml per 100 ml of formalin at an exposure time of 8 hours

The total time for formalin neutralization with ammonia in all rooms and equipment of the “infectious” zone is 12 hours. Ventilating laboratory rooms, corridors and auxiliary technological rooms of the “infectious” zone, BMB, etc. carried out using a centralized supply and exhaust system until the smell of ammonia disappears.

In case of fire in the laboratory rooms 9 of the "infectious" zone, the corresponding sensors 16 of the fire alarm system, automatic fire extinguishing system are activated and a fire-fighting agent is supplied in a gaseous form through the looped pipeline 8 for disinfection to laboratory rooms 9, corridors and auxiliary technological rooms of the "infectious" zone. The specified gas is in compressed form in cylinders 11 located in the technological area of the "clean zone". Gas from these cylinders 11 is supplied through a fire pipe 12 to a looped pipe 8 and through nozzles 10 it goes directly to the premises 9 of the “infectious” zone. An electrovalve 13 in conduit 12 eliminates the reverse flow of a gaseous fire fighting agent.

The gas volume necessary to extinguish the source / sources of fire is calculated based on the total volume of the premises of the 9 “infectious” zone. Nitrogen, carbon dioxide, halon and other non-combustible gases with minimal negative environmental impact can be used as a fire fighting agent. If there are working personnel in the “infectious” zone at the time of the fire, the automatic fire extinguishing system will delay the gas supply for a period of not more than 15-20 minutes, which are necessary for urgent personnel to leave the premises of the “infectious” zone according to the established procedure.

Claims (2)

1. A device for the preparation of a disinfectant for disinfection of laboratory rooms designed to work with viral and bacterial infections, including a source of supply of gaseous heated coolant under pressure and a container with a disinfectant connected by a pipe to a source of supply of gaseous heated coolant under pressure, characterized in that the feed source the gaseous heated heat carrier under pressure is made in the form of a coarse tubular heat exchanger twisted into a spiral "rube", the outer coarse of which is made with the possibility of connecting through an electrovalve to a source of superheated water vapor, and one end of the inner pipe of the heat exchanger is made with the possibility of connecting with a source of compressed air, its other end is connected by a pipe through an electromagnetic valve for supplying heated compressed air with a disinfectant tank, moreover, the capacity above the level of filling it with a disinfectant is made with the possibility of connection with the inlet of the looped pipe with nozzles having apans, for supplying the disinfectant to the laboratory rooms in which the indicated looped pipeline is located. 2. The device according to claim 1, characterized in that it is additionally equipped with a control and monitoring unit connected to an electrovalve for supplying heated compressed air to a container with a disinfectant, and an electrovalve for supplying superheated water vapor to the outer tube of the heat exchanger.

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